Spring 4.2.3 and fasterxml Jackson 2.7.0 are incompatible
Support for Jackson 2.7 will be added in Spring 4.3. See https://jira.spring.io/browse/SPR-13483. For now you aren’t able to use it without providing your own integration classes.
fasterxml
Create Java 8 Stream from ArrayNode
ArrayNode implements Iterable. Iterable has a spliterator() method. You can create a sequential Stream from a Spliterator using ArrayNode arrayNode = (ArrayNode) json.get(“xyz”); StreamSupport.stream(arrayNode.spliterator(), false)
Could not read JSON: Can not deserialize instance of hello.Country[] out of START_OBJECT token
You need to do the following: public class CountryInfoResponse { @JsonProperty(“geonames”) private List<Country> countries; //getter – setter } RestTemplate restTemplate = new RestTemplate(); List<Country> countries = restTemplate.getForObject(“http://api.geonames.org/countryInfoJSON?username=volodiaL”,CountryInfoResponse.class).getCountries(); It would be great if you could use some kind of annotation to allow you to skip levels, but it’s not yet possible (see this and this)
Generate JSON schema from Java class
EDIT: as pointed out by commenters, module is being deprecated, not maintained. So, Caveat Emptor etc One such tool is Jackson JSON Schema module: https://github.com/FasterXML/jackson-module-jsonSchema which uses Jackson databind’s POJO introspection to traverse POJO properties, taking into account Jackson annotations, and produces a JSON Schema object, which may then be serialized as JSON or used … Read more